^Simple circuit

Simple circuit

1. Current delivered by cell:

2. Power dissipated by a load is P_R = I²R

3. Power dissipated by a int. resistor is P_{d, r} = I²r

4. Power generated by a cell is

5. t.p.d. across cell & load is same & is

V = V_A – V_B = ξ – I r